Return the value for the specific attribute using XPathNodeIterator
I will use the following XML document in the example below.
<?xml version="1.0" encoding="utf-8" ?>
<users>
<user FirstName="Tom" LastName="Adams" Age="23" />
<user FirstName="Jhon" LastName="Brams" Age="17" />
<user FirstName="Bill" LastName="Smith" Age="33" />
</users>
The code prints out all the user nodes of the users node that have an age with a value greater than 17.
// Read the xml from resource file
string xml = Resources.Users;
using (StringReader sr = new StringReader(xml))
{
XPathDocument document = new XPathDocument(sr);
XPathNavigator navigator = document.CreateNavigator();
XmlNamespaceManager ns = new XmlNamespaceManager(navigator.NameTable);
//Selects all the user nodes of the users node that
// have an age with a value greater than 17
XPathNodeIterator it = navigator.Select("/users/user[@Age>17]");
while (it.MoveNext())
{
// access the atributes
string firstName = it.Current.GetAttribute("FirstName", ns.DefaultNamespace);
string lastName = it.Current.GetAttribute("LastName", ns.DefaultNamespace);
// Print out
Console.WriteLine( "{0} {1}", firstName, lastName );
}
}
